From this site

One project, every trade

Each calculator adds its lines to a single estimate — consolidated BOM, schedule and cash-flow included.

Open My Project →

Roof Batten Spacing Calculator (Tile Roofing)

Calculate the number of horizontal batten rows needed up a tile roof slope for a given batten gauge.

Computed in your browser — nothing you enter is uploaded. Figures are presented for United States against IRC 2024, and every formula is cited under regulatory standards below.

Last verified 2026-08-26 · v1.0.0

Market
Imperial · sales tax
16.4 ft
Schematic, drawn to the proportions you entered — not to scale on screen.

Batten rows needed

17 rows

High confidence

With the figures above, the batten rows needed comes to 17. This is calculated for United States and cites IRC 2024. Building in another market? Change the selector above so the units and code reference follow.

Estimated cost — your price

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — confirmed fixes become pinned regression tests.

[Schema Verified] Computed in alignment with American Concrete Institute (ACI 318-19) formulas and International Residential Code (IRC 2024) spatial boundaries.

Regulatory standards & verification citations

  • Batten rows = ceil(roof slope length / batten gauge/spacing) + 1, the standard method for laying out tile roof battens

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Frequently asked questions

Why is an extra row added beyond the simple division?
A batten row is needed at both the eave and the ridge end of the slope, so the row count is one more than the number of full gauge spacings that fit along the slope length.
What sets the batten gauge for a given tile?
Batten gauge is determined by the specific roof tile profile's headlap and exposure requirements from the manufacturer's fixing specification — it is not a fixed universal number across tile types.
Does this account for the eave batten, which is often doubled or thicker?
No — this calculates the number of gauge-spaced rows only. Many tile systems use a thicker or doubled starter batten at the eave, which should be checked separately against the manufacturer's fixing details.